v0.9.2Read the release notes

Your Markdown vault, in an open-source app.

Opensidian opens the local vault you already have: notes, wikilinks, themes and snippets. Built with Rust and Tauri v2, licensed GPLv3, run as a non-profit.Opens the local vault you already have: notes, wikilinks, themes and snippets. GPLv3.

Download for Linux Try it in the browser

Linux x86_64 · AppImage, Flatpak, RPM, DEB · signed checksums

Why Opensidian

Keep your notes. Keep your setup.

Opens your existing vault

Your files stay plain Markdown in a folder you own. Wikilinks, tags and the .obsidian config folder work as they are.

Community plugin support

Community plugins load alongside your vault. Excalidraw, for example, adds a hand-drawn canvas for diagrams.

Canvas as a core feature

Think on an infinite canvas built into the app: place notes, shapes, arrows and images, and connect ideas visually, all inside your vault.

Open source, clean-room

A functional reimplementation written from the outside, with none of Obsidian's code. Read, fork and patch it under GPLv3.

Signed releases

Every release ships GPG-signed SHA256 checksums, so you can check your download before you run it.

Optional Landlock sandbox

Turn on kernel-level sandboxing with Landlock when you want it. It is off by default and can be activated at any time.

Install · v0.9.2

Pick a package for Linux

All builds are x86_64, tested on fresh installs of Fedora 44, Ubuntu 26.04 LTS and Debian 13 on 2026-10-09.

Build from source →

Portable AppImage

Easiest

Nothing to install. WebKit is bundled; needs only the X11, GL and font libraries every desktop has.

Tested on Fedora 44, Ubuntu 26.04 LTS
Download .AppImage

Flatpak

Sandboxed

Runs sandboxed. Pulls the GNOME 49 runtime from Flathub on first install.

Tested on Fedora 44, Ubuntu 26.04 LTS (with flatpak installed)
Download .flatpak

Slim AppImage

Smallest

The smallest file, if you already have WebKitGTK 4.1.

Fedora 44: sudo dnf install webkit2gtk4.1Ubuntu 26.04 LTS: sudo apt install libwebkit2gtk-4.1-0
Download slim .AppImage

RPM for Fedora

System package with menu entry and icon; dnf pulls WebKitGTK 4.1. Install with sudo dnf install ./opensidian-0.9.2-x86_64.rpm

Download .rpm

DEB for Debian / Ubuntu

System package with menu entry and icon; apt pulls WebKitGTK 4.1. Install with sudo apt install ./opensidian-0.9.2-x86_64.deb

Download .deb

Verify your download

SHA256SUMS is signed with key A6E6 9ED6 BC47 79F3 2817 2148 4CC1 AFDE 15B6 4EA3

curl -LO https://github.com/jpzk/opensidian/releases/download/v0.9.2/SHA256SUMS \
     -LO https://github.com/jpzk/opensidian/releases/download/v0.9.2/SHA256SUMS.asc
gpg --keyserver hkps://keys.openpgp.org --recv-keys A6E69ED6BC4779F3281721484CC1AFDE15B64EA3
gpg --verify SHA256SUMS.asc SHA256SUMS
sha256sum -c --ignore-missing SHA256SUMS

Help package it

We're looking for Linux distribution maintainers. If you package software for a distro, get in touch on GitHub.

Open an issue →

Built with AI, reviewed by a human

Most of the code was written by Claude via Claude Code, from prompts, reviews and corrections by a single maintainer.

Read the AI disclosure →